An unidentified flying object, or UFO, in its most general definition, is any apparent anomaly in the sky that is not identifiable as a known object or phenomenon.
Although its definition encompasses any unexplained aerial phenomena, in popular culture the term has generally become synonymous with an extraterrestrial spacecraft.
UFO sightings have been reported throughout recorded history and in various parts of the world, raising questions about life on other planets and whether extraterrestrials have visited Earth.
They have become a major subject of interest, and the inspiration behind numerous films and books. However, sadly they are also the focus of intense ridicule.
For decades there has been a move, deliberate or not, to diminish the importance of UFOs and create a public belief that UFOs are part of some form of elaborate hoax.
Nevertheless, unexplained aerial observations of UFOs have been reported throughout history, from prehistoric times up until the present day.
Source
Although its definition encompasses any unexplained aerial phenomena, in popular culture the term has generally become synonymous with an extraterrestrial spacecraft.
UFO sightings have been reported throughout recorded history and in various parts of the world, raising questions about life on other planets and whether extraterrestrials have visited Earth.
They have become a major subject of interest, and the inspiration behind numerous films and books. However, sadly they are also the focus of intense ridicule.
For decades there has been a move, deliberate or not, to diminish the importance of UFOs and create a public belief that UFOs are part of some form of elaborate hoax.
Nevertheless, unexplained aerial observations of UFOs have been reported throughout history, from prehistoric times up until the present day.
Source